RPR used to be the undisputed #1 melee job.

They then proceeded to buff literally every other melee job past it because Arcane Crest utility is a lot better than DPS log junkies want to admit.

They buffed RPR when it became apparent it was falling behind the rest of the melee (scaling issues maybe?), but they seem to be fine with RPR's current DPS standing. Buffing RPR again at this point means that they also have to buff all the ranged jobs again and create powercreep issues.